AMG 50.1 Cams in M117, lumpy idle??...

Page may contain affiliate links. Please see terms for details.

Gear1275

Member
Joined
Aug 7, 2019
Messages
36
Location
Bristol
Car
500 sec
Gents,
I have been through my 500 sec and found amg 50.1 cams, solid lifters and machined rockers.
The car is running well and I have set the timing.
I have also replaced plugs, dizzy cap, rotor arm and checked ht leads for continuity.
The car starts and pulls incredibly well but when hot, the idle is slightly lumpy.
I have checked the injectors and seals and they are clean and pulled all plugs to recheck the gap and inspect them and they are all ok.
I have also checked for air leaks.
I don’t want to keep chasing a potential issue if the amg cams should have a slightly lumpy idle?
Also, on a side note, when I engage drive the revs do seem to get dragged down to the 500-550 range and the car does idle in park at more like 650-700.
I do get hot start problems from time to time so think I am losing fuel pressure from either a check valve or fuel accumulator but would this cause idle issues?
I would like to check the fuel system for pressures etc next also.
Any info would be great,
James.
 
Continuity is not a good check for HT leads. A resistance check would be more informative.
I'm not saying that is where your problem lies, just pointing it out.
 
Continuity is not a good check for HT leads. A resistance check would be more informative.
I'm not saying that is where your problem lies, just pointing it out.
Poor terminology on my part. I checked for 1k ohms per lead and all were ok
 

Users who are viewing this thread

Back
Top Bottom